There was a time when Armi San Marco built really nice guns. Then, in the last three years of their existence, their quality control went to nonexistent. Some really horrible guns came out of their plant toward the end.
The EMf hartford was a really nice gun. As mentioned by Lefty Dude, they were the closest copy to the original SAA anyone has built. Also correct, with a little fitting, Colt parts will work just fine (vis versa too). If you get in a real bind, quite a few Pietta parts can be fit. Really nice to play with too. Take it out and have fun with it.
I would suggest you replace the Main Spring with a reduced power Main Spring to improve the user friendly factor and reduce wear on the action.
Coffinmaker